Alter the migrations so that it is a no-op as the columns are unused …

…and the operation is very expensive

OpenSim/Data/MySQL/Resources/AssetStore.migrations

@@ -77,4 +77,5 @@ ALTER TABLE assets ADD COLUMN CreatorID varchar(128) NOT NULL DEFAULT '';
 
 :VERSION 9
 
-ALTER TABLE assets MODIFY description varchar(128);
+BEGIN;
+COMMIT;

OpenSim/Data/MySQL/Resources/XAssetStore.migrations

@@ -29,7 +29,4 @@ COMMIT;
 :VERSION 2
 
 BEGIN;
-
-ALTER TABLE xassetsmeta MODIFY Description varchar(128);
-
 COMMIT;

OpenSim/Data/PGSQL/Resources/AssetStore.migrations

@@ -95,4 +95,5 @@ alter table assets add "creatorid" varchar(36) not null default '';
 
 :VERSION 8
 
-ALTER TABLE assets ALTER COLUMN description TYPE varchar(128);
+BEGIN TRANSACTION;
+COMMIT;

OpenSim/Data/PGSQL/Resources/XAssetStore.migrations

@@ -77,7 +77,4 @@ COMMIT;
 :VERSION 5
 
 BEGIN;
-
-ALTER TABLE xassetsmeta ALTER COLUMN description TYPE varchar(128);
-
 COMMIT;

OpenSim/Framework/AssetBase.cs

@@ -51,7 +51,7 @@ public class AssetBase
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
         public static readonly int MAX_ASSET_NAME = 64;
-        public static readonly int MAX_ASSET_DESC = 128;
+        public static readonly int MAX_ASSET_DESC = 64;
 
         /// <summary>
         /// Data of the Asset